Polaris Discussions about Polaris ATVs.

Stacking headgaskets for scram 400??

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Old Oct 14, 2005 | 05:30 PM
  #11  
duneaholic's Avatar
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Default Stacking headgaskets for scram 400??

Originally posted by: KeninAZ
yeah, bought it for $1200 with new tires, paddles, hitch and rack and all the mods listed in my signature. spending $170 for the top end work and $80 for the new dome, should be a good running bike for not alot of money.

hopefully there is nothing else wrong with it (crosses fingers)
Stop thief! Stop thief![img]i/expressions/face-icon-small-happy.gif[/img][img]i/expressions/face-icon-small-wink.gif[/img]

Good buy and good luck. I think you'll like it a lot. Let us know how you like the FmF pipe.
 
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Old Oct 14, 2005 | 05:56 PM
  #12  
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Default Stacking headgaskets for scram 400??

Originally posted by: braveops
just a thought but you might be abble to stack the base gaskets abit and it might help
I thought about that, but I wasn't sure if that would mess with the port timing or something weird like that. 2 strokes are like a different language to me, learning a bit at a time I guess.
 
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Old Oct 14, 2005 | 07:12 PM
  #13  
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Default Stacking headgaskets for scram 400??

In theory I guess that would raise the ports some making the power come in at a higher rpm.
 
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Old Oct 14, 2005 | 07:20 PM
  #14  
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Default Stacking headgaskets for scram 400??

Well, herein lies the problem with what is being said.........

One of the key players in the combustion chamber is the squish band. That will help designate the torque output of the motor as well as the rpm range (to a certain extent). The biggest role is to maximize power output and keep detonation down. When you go raising the head or the cylinder you make the squish area wider (the distance from the piston crown to the head). Believe it or not that will HELP induce detonation. The only correct way is the keep the squish band correct and use the right compression ratio dome. Hope I didnt lose anyone there. KeninAZ you are going about it the right way with a replacement dome. Bubba
 
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Old Oct 14, 2005 | 07:31 PM
  #15  
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Default Stacking headgaskets for scram 400??

Thanks Bubba!
 
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